Linear has buck boost dc/dc for wireless sensor applications
1 min read
The LTC3330 from Linear Technology is a complete regulating energy harvesting solution that delivers up to 50mA of continuous output current to extend battery life when harvestable energy is available.
The device requires no supply current from the battery when providing regulated power to the load from harvested energy and only 750nA operating when powered from the battery under no load conditions.
A high voltage energy harvesting power supply and synchronous buck boost dc/dc converter powered by a primary cell battery create a single, non interruptible output for energy harvesting applications such as those in wireless sensor networks.
The energy harvesting power supply, consisting of a full wave bridge rectifier accommodating ac or dc inputs and a high efficiency buck converter, harvests energy from piezoelectric, solar or magnetic sources.
The primary cell input powers a buck boost converter that operates from 1.8 to 5.5V at its input when harvested energy is not available to regulate the output whether the input is above, below or equal to the output. The device automatically transitions to the battery when the harvesting source is no longer available.
The LTC3330EUH is available in a 5 x 5mm QFN package. An industrial temperature grade version, the LTC3330IUH, is also available.
